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A novel humidity sensor using yb-doped SrCeO3 ionic conductor with a au-pd filter

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Abstract

A novel humidity sensor operating at T<580K using Yb-doped SrCeO3 ionic conductor with a Au-Pd chemical filter has been developed. In this unique design, both the electrodes are exposed to the same test gas and therefore do not require separation of working and reference compartments. A thin layer of impervious Au-Pd alloy on one surface of the perovskite electrolyte allows selective access to oxygen gas, while the other surface coated with porous Pt is exposed to both H2O and oxygen. Sensor emfs are found to be directly proportional to log pH2O and independent of pO2. The design aspects of the sensor, the experimental set-up, some typical results and a postulated mechanism of sensor operation are described in this paper.

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6. References

  1. I. Emmer and R.G. Pritchard, Int. J. of Electronics,76(5), 829 (1994).

    CAS  Google Scholar 

  2. G. Gusmano, Br. Ceram. Trans.92(3), 104 (1993).

    CAS  Google Scholar 

  3. T. Nitta, J. of Amer. Ceram. Soc.63(5–6), 295 (1980).

    CAS  Google Scholar 

  4. A. Kharaz and B. Jones, Measurement and Control28, 101 (1995).

    Google Scholar 

  5. F. Zimmermann, Measurement and Control28, 104 (1995).

    Google Scholar 

  6. M. Zheng and X. Zhen, Solid State Ionics59, 167 (1993).

    Article  CAS  Google Scholar 

  7. H. Uchida, N. Maeda and H. Iwahara, J. of Appl. Electrochem.12, 645 (1982).

    CAS  Google Scholar 

  8. H. Iwahara, Solid State Ionics 77, 289 (1995).

    Article  CAS  Google Scholar 

  9. D. J. Slater, R. V. Kumar and D. J. Fray, Solid State Ionics, in press

  10. N. Ahmed, G. M. Kale, R.V. Kumar and D.J. Fray, Solid State Ionics, in press

  11. G. M. Kale, A. J. Davidson and D.J. Fray, Solid State Ionics84/85, 1996, in press

  12. H. Iwahara, T. Esaka, H. Uchida and N. Maeda, Solid State Ionics3/4, 359 (1981).

    Article  Google Scholar 

  13. R. V. Kumar, L. J. Cobb and D. J. Fray, 3rd Euroconference on Solid State Ionics, in press

  14. H. Iwahara, Solid State Ionics11, 109 (1983).

    Article  CAS  Google Scholar 

  15. N. Bonanos, B. Ellis and M. N. Mahmood, Solid State Ionics28–30, 579 (1988).

    Google Scholar 

Download references

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Authors and Affiliations

  1. Department of Mining and Mineral Engineering, University of Leeds, UK

    L. J. Cobb

  2. Department of Materials Science and Metallurgy, Univ. of Cambridge, UK

    R. V. Kumar & D. J. Fray

Authors
  1. L. J. Cobb
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  2. R. V. Kumar
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  3. D. J. Fray
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Cobb, L.J., Kumar, R.V. & Fray, D.J. A novel humidity sensor using yb-doped SrCeO3 ionic conductor with a au-pd filter. Ionics 2, 231–234 (1996). https://doi.org/10.1007/BF02376027

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  • DOI: https://doi.org/10.1007/BF02376027

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